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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
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 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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 */

/*
 * @test
 * @summary Verifies that canDecode does not throw EOFException
 *          if the file has too few bytes.
 * @run     main CanDecodeTest
 */

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.spi.ImageReaderSpi;
import javax.imageio.stream.ImageInputStream;

public class CanDecodeTest {

    private static final String[] FORMATS = {
        "WBMP", "BMP", "GIF", "PNG", "TIFF", "JPEG"
    };

    public static void main(String[] args) {
        for (String format : FORMATS) {
            ImageReader reader =
                    ImageIO.getImageReadersByFormatName(format).next();
            ImageReaderSpi spi = reader.getOriginatingProvider();

            for (int n=0; n<8; n++) {
                InputStream dataStream =
                        new ByteArrayInputStream(new byte[n]);
                try {
                    ImageInputStream iis =
                            ImageIO.createImageInputStream(dataStream);

                    if (spi.canDecodeInput(iis)) {
                        throw new RuntimeException("Test failed for " +
                                format + " format: shall not decode.");
                    }
                } catch (IOException e) {
                    throw new RuntimeException("Test failed for " +
                            format + " format: " + e, e);
                }
            }
        }
    }
}
